directional microphone technology - Phonak

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• LiSN-S means Listening in Spatialized Noise – Sentences Under headphones a virtual 3D space is created with target sentences coming from the front and distracting sentences are coming from the left and the right. • It is like having a free field test under headphones with real life like conditions • The patient‟s task is to repeat sentences. • The distracting sentences are spoken by different voices than the target sentences, the condition is also called „Different voices ± 90º‟. • The professional enters the number of correct words. • LiSN-S is an adaptive test, the presentation level of the target sentences is adjusted automatically based on how many words were correct in the last sentence • The test ends automatically within 5 minutes. • LiSN-S has some unique features which will help fitters to justify their recommendations and which will convince patients of their hearing status and the required intervention FM Classroom February 2013
• LiSN-S PGA is a brand new diagnostic test that measures speech understanding in noise in patients with a hearing loss. • PGA means Prescribed Gain Amplifier the stimuli are amplified according to the pure tone audiogram according to the NAL RP rule. • If there is a conductive component in the hearing loss, bone conduction thresholds are taken into account. • LiSN-S accurately measures a patients ability to understand speech in noise as if they were wearing hearing instruments (amplification), and by comparing a patient‟s performance on LiSN-S PGA with normative data stored in the software, LiSN-S PGA predicts accurately the patient‟s performance in noisy situations compared to normal hearing listeners of the same age, and if the predicted performance is not good, LiSN-S PGA gives clear, individual, <strong>technology</strong> recommendations how to improve speech understanding in noise. • So based on the responses by the patient to the sentences, the patient gets an evidence based recommendation. FM Classroom February 2013
Page 1 and 2: Peter Stelmacovich FM Classroom and
Page 3 and 4: SNR in typical Listening situations
Page 5 and 6: FM Classroom February 2013
Page 7 and 8: Pediatric_A_GB without dNC with dNC
Page 9 and 10: • Improvements in SNR for directi
Page 13 and 14: 13 -35° 0° 35° - 60° 60° -90°
Page 15 and 16: • Directional microphones have pr
Page 17 and 18: • By moving a microphone from the
Page 19 and 20: 19 • Wireless, omnidirectional mi
Page 21 and 22: • Wear it at the correct location
Page 23 and 24: • To achieve an improvement in SN
Page 25 and 26: • Dynamic FM is different than fi
Page 27 and 28: • Ambient noise levels are estima
Page 31: 1. Children with hearing loss that
Page 35 and 36: Run the test Professional clicks
Page 37 and 38: LiSN-S PGA‟s results mention clea
Page 39 and 40: X Even with amplification, the pati
Page 41 and 42: X FM Classroom February 2013 Even w

directional microphone technology - Phonak

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